Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
证明 P(A intersection B) <= \min(P(A), P(B)) 。
证明 P(A intersection B) <= \min(P(A), P(B)) 。
Natural Language
Math Input
Extended Keyboard